Drilling machine



Feb. 3, 1942- A. HossFELD DRILLING. MACHINE Filed June 7, 1940 5 o/o. \\\\\\\\`V-\\\\\ 'Patented Feb. 3, 1942 UNITED STATES PATENT OFFICE n DRILLING MACHINE Albert lHossfeld, Winona., Minn. Application June 7, 1940, Serial No. 339,294

s'claims. (c1. s55-4o) t n tain parts of the drilling machine above referred to and to add certain attachments thereto, whereby samples of the material or materials, through which the bit of the drill is passing, may be taken. y

While the invention is intended'for general lower ends to "crank pinsI3, one fof which is secured to a crank-acting sprocket Wheel I4 'secured toa horizontal transverse shaftrk I5 journaled in bearings on the tilting frame I0. The other crank pinis secured to a counterweighted crank arm, not shown, on the shaft I5. vFor the purpose of this case` itis not thought necessary use, it provides a drilling machine especially well adapted for prospecting-for coal, for clay for use in making brick, and the like.

- To the above end, generally stated, the invention consists of the novel devices, combination of devicesand arrangement of parts hereinafter described and defined in the claims.

`In the accompanying drawing, which illustrates the invention, like characters indicate like parts throughout the several views.

Referring to the drawing:

Fig. 1 isa fragmentaryv perspective View of a drilling machine having the invention embodied therein;

Fig. 2 is a fragmentary View partly in side elevation and partly in longitudinal central section of the drill bit, the adaptor, and the shaft, onan enlarged scale; l

Fig. 3 is-a view partly in side elevation and partly innlongitudinal central section showing the parts illustrated in the upper right-hand portion of Fig. 1, on an enlarged scale;

Fig. 4 is a view corresponding to Fig. 3 but showing the parts illustrated in the upper lefthand portion of Fig. 1, on an enlarged scale;

Fig. 5 is a view partly in plan and partly in horizontal section taken on the line -55 of Fig. 3;

Fig. 6,is a view partly in end elevation and partly in vertical section taken yon the line 6-.6 of Fig. 3; and

Fig. 7 is -a fragmentary view showing the rope guide and the mast supporting the same, on an enlarged scale.

Of the parts of the drilling machine fragmentarily illustrated, it is important to note the main frame 8, the secondary frame 9 rigidly I, mounted on' the main frame, the tilting frame I 0 mounted on saidysecondary frame,`and the reciprocating carriage II, mounted on thetilting frame I0. The carriage II is reciprocated by a' pair ofupright connecting rods .I2 pivotally attached at their upper ends to said carriage. 'Ihese connecting rods I2 are pivoted at their to 'illustrate the mechanism for driving the sprocket wheel I4, however it may be assumed that anv internal combustion engine is mounted on the main frame 8 with "transmission mechanism from said Iengine to the sprocket wheel I4.

The drill properjwhich forms part of my pres# ent invention, includes a hollow sectional steel shaft I6, onlytwo sections of which are shown,

and these sections are `separalo'ly connected by p a short coupling I'I, the body of which is identical with the shaft I6. The end portions of the coupling I'I are reduced in diameter, fitted into therespective end portions of the shaft I6 and lhave screw-threaded engagement therewith. It

is, ofv course, understood that as the drilling operation progresses, other sections will be -successively 'coupled vto the shaft I6 in the drilling machine.

' An adaptor I8 is lrigidly secured to the lower end of the jshaftl and a bit I'I is detachably secured, by screw-threads, to the lower end of said adaptor. Hereinafter, for the sake of clearthe shaft I6 in the tilting frame I0 rincludes al main sleeve bearingl20 turnably mountedon the tilting frame I0. v

The following connections, actuated by the reciprocating carriage II, are provided for turningv the bearing`20 about'its axis to assist in imparting step-by-step movement to the drill,

to Wit: a crank.arm2I, rigidly secured to thev bearing 20, is connected by a tilting link 22 to said carriage, as indicated at 23. A friction grip 24 is applied to the shaft I6 and through which Y grip vthe shaft I6is automatically moved to feed thel bit I 9 to its work. Co-operating withthe lfriction grip 24 is anl abutment in thel form of a striker plate 2.5 on said grip.

The drill is endwise reciprocated by .a compression .propelling coiled spring 26 and a comthe tilting frame I0 below pression buffer coiled spring 21 under the action of the reciprocating carriage I0. These springs 26 and 21 encircle the shaft I, the former above the friction grip 24 and the latter below the same. The spring 26 is rigidly secured at its upper end to the main bearing 2li and the spring 21, at its lower end, is secured to the carriage II. Both springs 26 and 21 at their inner ends are loose and the latter loosely7 extends through an aperture in the striker plate 25. Normally the friction grip 24 rests on the buffer spring 21 and at this time there is considerable clearance between the said grip and the propelling spring 26.

The drilling operation may be briefly described as follows, to wit: It may be assumed that the `carriage II is in its lowermost position, with the bit I9 resting on the material to be drilled, that the grip 24 is resting on the striker plate 25, that the propelling spring 26 is expanded to its full length and that the buffer spring 21 is compressed to a point in which its upper end is flush with the striker plate 25. point, the connecting rods I2 move the carriage upwardly which gives the drill a powerful throw upwardly, which together with the force of the expanding buffer spring 21 acting on the grip 24, causes the drill to travel at a faster speed than that of the carriage II and henceit is caught by the engagement of the grip 24 with the propelling spring 26. The engagement of the grip 24 with the propelling spring 26 compresses said spring, places the same under tension and at the same time said spring absorbs the force of the projected drill and stops. the same for reverse projecting movement.

The carriage II, during its downward movement by the Connecting rod i2, gives the drin a powerful downward thrust that is accelerated by the force of the expanding propelling| spring 26 which causes the drill to attain a high velocity. During the downward thrust of the drill, the grip 24 first engages the buffer spring 21, compresses the same and then engages the striker plate 25 and is stopped thereby, and as the drilladvances into the material being drilled, the momentum thereof causes said drill to slip, in. or feed through the striker plate 25.

The process of rotating the drill is as follows, to-wit: during the upward travel of thelcarriage II the link 22, acting on the crank arm. 2I, turns the sleeve bearing 29 to the left withoutrotating the drill, for the reason that the spring 25 is.

out of engagement with the grip24, or in, other words, the connection, to wit: the fi'ictional engagement between the propelling spring 2B, and the grip 24, is broken. When the carriage II has reached the limit of its upwardY travel, the

momentum of the drill causes said drill to travelY endwise relative to the carriage I I, which brings the grip into contact with the lower end of' the spring 26 so that by the time the drill reaches the limit of its upward travel, said spring hasV been compressed to such an extent as to causev sufficient friction between the grip 2li and the inner end of the spring 26 so as to cause the drill to be rotated by the spring 26 as the carriage II is travelling downwardly, as will, now

appear. Obviously, the grip 24 and the inner end of the spring 25 afford a friction clutch. During the downward travel of the carriage II, the link 22 acting on the crank arm 2| turns the sleeve bearing 29 in the carriage I I and hence turns the drill through the spring 26 and the grip 24. It will thus be seen that while the sleeve bearing 20 is given onevcomp-lete oscillation during each cycle of operation of the drill, the action thereof is negative during the upward travel of thecar- From this starting riage I I and positive during the downward travel thereof, so that the drill is given steps of rotary movement in a constant direction. The purpose of turning a drill during drilling operation is too well known to need any comment here.

The parts thus far described are fully described and broadly claimed in my patent heretofore identied except the hollow shaft I6, which takes the place of the shaft described in said patent, the adaptor and the coupling.

Referring now in detail to the invention, the adaptor I8 has an axial passageway 28, the upper end of which is in communication with the interior of the hollow shaft I1. At the lower end of the passageway 28 is a valve seat 29 and formed in said shaft below the valve seat 29 is an intake chamber 30. A port 3i extends through the valve seat 29 and connects the chamber 3l) to the passageway 28. Normally, the port 3| is closed by a check valve 32, in the form of a ball, which rests on the valve seat 29. Diametrically opposite pairs of intake ports 33l lead from the exterior of the adaptor I8 to the chamber 3; These ports 33, as shown, are upwardly and inwardly inclined.

A hose connector 34, in the form of a short upright pipe, is detachably secured at its lower end to: the upper end of the shaft I6 by a coupling 35 that is identical with the couplingl I1. One end of a hose 36 is telescoped over the upper end portion of the connector 34 and secured thereto by a clamp 3.1. The hose 36 is carried by a plurality of sleeve-like membersV 38 and extends longitudinally over' the upperl edgeof a horizontally disposed arm 3.9 cut fromV a- Wooden board and positioned edgewise in avertical plane. This arm 39 is attached at oney end to: they hose connector 34 by a hinge 40= for oscillatory movement in a vertical plane, and.' is heldsuspended at its other end by arope 45| fromthe upper end of a mast 42. This mast 42 issupported from the tilting frame I0; in; an upwardly and' outwardly inclined position relative to the; shaft I6 by upper and lower crosstie members 43;. The rope 4I is intermediately held by a guide tube/44. through which tube the rope: 4I isy free to slide endwise. Said rope 4I is secured; atV one endto the outer end of the arm39sbyr1 an. eye 45: andthe other end portion of the ropep4Iis, secured: to the mast 42 by a cleat 46. The tube: 44 is inthe form of an inverted U withV one of itslegs rigidly secured to the mast 42. and with itsother leg arranged to hold the respective end portion.` of they rope 4 I. in a position in, which the arm.39 is'laterally spaced from the mast .42; Said.` tube 44 at its ends are outwardly flared soithattherope 4I willA slide therethrough without undu'ewear.` Y

Each sleeve-like member 38'y has a flange 41 that overlaps the arm 39, is bolted theret'ofand rigidly secures the respective member 38l-tor said arm. The internal diameter of the member 38 is somewhat larger than the external diameterv arm 39 extends, and saidstrapsI are bolted; toV

the arm 39. These straps 48 project outwardly of the respective end of the arm 39, embrace theupper endportions of a pair of upright: Str-aps. 49 and arefpivoted thereto, asindicated at 59;-

The hinge straps 49=are rigidly secured attheirl lower end portions to a sleeve-like metallic mem'- ber 5I- at diametrically opposite'points. The hose theshaftl, theiropell may. be adjusted'to keep :connector 35 extends axially through the member- -the'arm 39 in substantially a horizontalpostion.

AI.1,1A'relatively softrubber sleeve 52 is inter- `posedbetween the connector 35and the sleeve 5I and connects theihinge 40 indirectly to the shaft IG.l A-The purpose ofthe rubber sleeve 5I is `to form'a cushion vbetween the drill and the arm 39.

The-'sleeve52 isheld against endwise movement in the member 5I by the contracted upper end portion of said member and a washer 5 3 secured to the connector 35 at the bottom of said sleeve.

In,` a broadsense, the `adaptor lfformsa part of thefShaft |6.':'

The drawing villustrates a'commercialform of Vthe invention, but itwill-beunderstcodl thatlthe details of construction, arrangement 'and com- The hinge strapslIS are connected neartheir .upper ends by a cross-tie memberl SII-that'A is outwardly bowed to afford clearance for the hinge the hose 36 against endwise movement `toward the ,hose connector 35.

The hose36 at its free end portion is -telescopedY into theinner end portion of a metal conduit 56 that lies longitudinally on the upper edge of the .'arm 39 at its outer end portion. Flanges51'on the conduit 56 overlap' the. arm 39 and `are bolted thereto. One end of a long hose 58 that reaches nearly to the ground is telescoped onto the outer .end of thefconduit 56 and is secured thereto by a clamp 59. The end portions of the members .38 and the inner end of the conduit are outwardly flared to prevent undue wear on the hose 36.

Operation ,bination of parts within'lthescope of theinvention herein disclosed. U

What I claim isz'y one end tothe upper end `of the .shaft for rotation therewith and leading laterally therefrom with its outer end portion loosely extending into' the conduit,Y and`means supporting .the hose with The process of' taking samples of the earth by `means of the apparatus embodied .in a drilling f machine as above described may be briefly stated as follows: The bit I9 cuts a hole, the diameter of which is considerably larger than the diameter of the shaft I6 so that there is considerable clearance between the wall of the drilled hole and the shaft of the drill. Water is either poured down port 3I. During the violent upward stroke ofl the drill, the column of slush is thrown upward therein and as the lower end of said column moves away from the valve seat 3 I, suiiicient sucfreedom for rotation with the shaft and in the conduit. f 1 L 2. Ina drilling machine, a hollow shaft, means for reciprocating the shaft, a port leading from the exterior of the shaft-to the Ainterior-thereof, a valve normally closing the port, meansfor rotating the shaft, a `horizontally disposed arm hinged at one end to the upper'end'of the shaft foroscillatory movement in a vertical plane, meansl supporting the arm at itsother end for raising or ylowering movement, a conduit on the arm, and a hose carried by the arm and attachedat one end to the-upper end of the rshaft for rotation l outer end portion loosely extending into the conduit.

3. Ina drilling machine, a hollow shaft, means l the exterior of the shaft to the interior thereof, a valve normally closing the port, means for rotating the shaft, a horizontally disposed arm hingedfat one end to the upper, end of the shaft for oscillatory movement in a vertical plane, means supporting the arm at its other end for raising or lowering movement, a conduit on the arm, a hose carried by the .arm and attached at one end to the upper end of the shaft for rotation therewith and leading laterally therefrom with its outer end portion loosely extending into the conduit, and a second hose leading from the conduit.v

tion is produced by the moving column of slush to open the valve ball 3I and draw slush through the ports 33, chamber 30, port 3| and into the hollow shaft I6. From the hollow shaft I6,. the

slush therein is moved upward through the cou-V pling 35, hose connection 34 and from thence which the bit is passing may be deposited fromV the hose 58 in a receptacle, as shown, a pail x.

During `the turning of the drill about its axis, the hose 3l also turns therewith about its axis in the members 38 and the conduit 56. Obviously, the rope connection 4| permits free oscillatory movement of the arm 39 in a vertical plane, im-

parted thereto by the reciprocating movement of the drill. As the drill moves downwardly in the tating the shaft, a horizontally disposed .arm

hinged at one end to the upperend of the shaft for oscillatory movement in a vertical plane,

means supporting the arm at its other end for raisingv or lowering movement, a conduit on the arm, a hose carried'by the arm and attached at one end to the upper end of the shaft for rotation therewith and leading laterally therefrom with its outer end portion loosely extending into the conduit, and a cushion in the hinge connection between the arm and the shaft.

5. In a drilling machine, a hollow shaft, means for reciprocating the shaft, a port leading from the exterior of the shaft to the interior thereof, a valve normally closing the port, means for rotating the shaft, ahorizontally disposedr arm `hinged at one end to the shaft for oscillatory movement ina vertical plane, a mast on the 'drilling machine, a cable intermediately supported from the mast and having one of its ends attached `to the 'other end of the arm, means for adjustably securing the other end portion of the cable, a conduit on the arm, and a hose carried by the arm and attached at one end to the upper end of the shaft for rotation therewith and leading laterally therefrom with its outer end portion loosely extending into the conduit.

6. In a drilling machine, a hollow shaft, means for reciprocating the shaft, a port leading from the exterior of the shaft to the interior thereof, a valve normally closing the port, means for rotating the shaft, a horizontally disposed arm hinged at one end to the upper end of the shaft for oscillatory movement in a Vertical plane, means supporting the arm at its other end for raising or lowering'movement, a conduit on the arm, horizontally spaced tubular guides on the arm, and a hose attached at one end to the upper end of the shaft for rotation therewith, said hose extending loosely through said guides with its outer end portion loosely extending into the conduit, said hose being free for rotation in said guides and conduit.

'7. In a drilling machine, a hollow shaft, means for reciprocating the shaft, a port leading from the exterior of the shaft to the interior thereof, a valve normally closing the port, means for rotating the shaft, a horizontally disposed arm, a hose connector forming an extension of the shaft at its upper end, a hinge connecting the arm at one end to the hose connector for oscillatory movement in a vertical plane, means supporting the arm at its other end for raising or lowering movement, a conduit on the arm, and a hose carried by the arm and attached at one end to the hose connector for rotation with the shaft and leading laterally therefrom with its Outer end portion loosely extending into the conduit, said hinge including a sleeve-like member through which the hose connector extends axially and a rubber sleeve interposed between the hose connector and said member and connecting said member to the hose connector.

8. In a drilling machine, a hollow shaft, means for reciprocating the shaft, a port leading from the exterior of the shaft to the interior thereof, a valve normally closing the port, means for rotating the shaft, a horizontally disposed arm hinged at one end to the shaft for oscillatory movement in a Vertical plane, a mast -on the drilling machine, a tubular cable guide in the form of an inverted U secured to the mast, a cable extenda ing through said guide and having one of its ends attached to the other end of the arm, means for adjustably securing the other end portion of the cable, and hose carried by the arm and attached at one end to the-upper end of the shaft for rotation therewith and leading laterally therefrom.

ALBERT HOSSFELD. 

